Riveting-machine.



A, T. MAENCHE.

RIVETING MACHINE APPLlcATloN FILED MAY29,1914. Y

Patented May 9, 1916.

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Inventor@ WJ WML;

A. T. MAENCHE.

RIVETING MACHINE.

APPLlcATloN FILED MAY 29. w14.

Patented May 9,1916.

3 SHEETS-SHEET 2.

` A. T. MAENCHE.

RIVETING MACHINE.

APPLICATION FILED MAY29,1914.

1,182,397. Patented my 9,1916.

3 SHEETS-SHEET 3.

UNITED kSTATES PATENT ormoni ALBERT T. MAENCHE, OF WALTHAM, `MASSACHUSEITTS7 '.ASSIGNOR TO JUDSON L. THOMSON MFGr. CO., A CORPORATION OF MASSACHUSETTS.

RIVETING-MACHINE.

Specification of Letters Patent.

Application filed May 29, 1914. Serial No. 841,935.

To (1U whom it m (1.7/ concern:

lie it known that I, Amncn'r T. MAENCHE, a citizen of the United States, residing at 'altliam. in the county of Middlesex and State of lllassachusetts, have invented new and useful Improvements in Rivcting-Machilies, of which the following is a specification.

This invention relates to a machine for riveting pieces of sheet material together.

In riveting two pieces of sheet material together there is oftentimes a space between the adjacent surfaces of the said two pieces l of sheet material before they are riveted which it is desirable to closeup before the rivet is clenched. Moreover, in clenching a rivet it is desirable that the head of the rivet should be firmly pressed against the outer surface of one of said pieces of sheet material before the clenching of the opposite end of the rivet against the face of the other piece of sheet material begins. Otherwise, the rivet is liable to buckle between the'end and the head and make an imperfect job in this respect, and also ,it will begin to clench as soon as it passes the outer surface of the under piece of material and make a very small curl over in the clenching operation.

The desirable manner of performing the riveting operation is to position the rivetv vin the holes designed therefor in the two pieces of sheet material and clamp the two pieces of sheet material firmly together, with the -clenching end of the rivet projecting beyond the lower surface ofthe sheet metal plate against which it is to be clenched and then move the rivet while thus positioned and the metal plates which are to be riveted together bodily toward an anvil, so that the entire amount of projection of the clenching end of the rivet shall be turned over or clenched against the face of the metal plate after the rivet has lbeen positioned in the plates and after the plates havebeen clamped firmly together.

It isthe object of this invention to provide a machine which shall performk the riveting` operation in the preferable manner hereinbefore set forth.

The ,invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the .claimsthereof I Referring to the drawings: Figure l is a front elevation of my improved riveting machine. Fig. 2 Iis a left hand side elevat1on of the same. Fig. 3 is a sectional elevation taken on line 3-3of Fig. 1. Figs. 4, 5 and 6 are detail sectional elevations illustrating the relative positions of the parts during the riveting operation. l

Like numerals referto like parts throughout the several views of the drawings.

In thedrawings, 10 is the frame of the machine, 11 is the driving shaft journaled to rotate in suitable bearings 12 and 13 in the frame of the machine.

14 is a pinion fast to the driving shaft and meshing into a gear 15 which is journaled to rotate upon a shaft 16 and forms one member of a clutch 17. The other member 18 of said clutch is fastened to the shaft 16. The two members 15 and 18 are clutched together as one piece by suitable mechanism (not shown in the drawings, but well known to those skilled in the art), this mechanism being dperated from a treadle (not shown in the drawings) by means of a treadle rod 19.

The rivets are driven during the setting operation by a driver 2O which is fastened to a slide 21 guided in ways 22 in the frame 10. The. slide 21 has a vertical reciprocatory motion imparted thereto by a pair of i toggle links 23 and 24 which are Yconnected to a link 25 by a pivotal pin 26. The link 24 is pivoted at 27 to the frame ofthe machine, while the link 23 is connected to the upper end of theslide 21 by a pin 28. The link 25 is pivotally connected at its opposite end to a crank-pin 29 which is fastened to a cam plate 30, said cam plate being in turn, fastened to the shaft 16. By this mechanism a reciprocatory motion is imparted to the slide 21 and hence to the driver 20.

The rivets are fed from a hopper 31 down a raceway 32 and are separated by a slide 33 to be fed down a raceway 34 into a carrier 35 which consists of two carrier blocks 36 and 37 fast to springs 38 and 39, respectively, said springs being fastened by a bolt 40 to a carrier slide 41. The carrier slide 41 has a pin 42 fast thereto which projects through a slot 43 in the frame of the machine and constitutes a stop to limit the upward movement of the slide 41. Said slide 41 also has a pin 44 fast thereto which projects into a slot 45 in the lever 46 which is pivoted at 47 to the frame of the machine and at its opposite end is provided with a cam roll 48 which bears against the cam 30. 'A spring 49 is fastened at one end to the lever 46 and at they other end to the frame and acts to hold the roll 48 in engagement with the cam during its operation.

The rivets are transferred from the race- Way 32 to the raceway 34 one at a time by the slide 33 which is operated by a lever 50 pivoted at 51 to the frame` of the machine, and has a rocking movement imparted thereto in one direction by a spring 52 and in the opposite direction by a projection 53 on the rear side of the link 25. The operation of the slide 33 in transferring the rivets from the raceway 32 to the raceway 34 is Well lknown to those skilled in the art and, as-it forms no part of this invention, requires no further description.

A stationary work-support 54 is mounted in the outer end 55 of an arm 56 forming a part of the frame 10. This stationary worksupport has embodied therein, or forming a part thereof, a recess 57 in its outer end,

said recessed portion being shaped to'turn the end of the rivet outwardly and clench Vthe same against the material, thus constituting an anvil. The outer upper edge 54 of the stationary work-support 54 constitutes a' work-engagingsurface while the recessed p ortion 57y constitutes a clenching surface. bodies a work-support with a work-engaging surface 54 and a clenching surface 57 constituting an anvil. Said stationary work-support 54 is .adjustable vertically toward and away from the driver 20 by means of an adjusting screw 58 having screw-threaded engagement with the arm 56 of the frame, being locked in adjusted position by means of a lock nut 59. Within the stationary work-support 54 is a spring 60, the lower end of which rests against a screw 61 having screw-threaded engagement Vwith the stationary work-support 54, the upper end of said spring bearing against a collar 62 upon a guide-pin 63, said guide-pin having sliding engagement with the upper end of the work-support 54 and being surrounded by the recessed portion 57 constituting an anvil. y 4 v Ay movable work-support 64v forming a sleeve surrounds the upper end of the stationary work-support 54 and is supported by yielding means consisting, -in the present embodiment of -my invention, of a lever 65 which is pivoted at 66 to a bracket 67 fast to the arm 56. The lever 65 is extended rearwardly from the pivot 66 and has a stop-screw 68 in screw-threaded engagementI therewith. Said stop-screw projects below the lever 65 and is adapted to .engage the upper edge of the arm 56 while being locked in position by means of a lock-nut 69. This adjusting means enables the work rest 64 to be adjusted toward and away from the The part 54, therefore, em- .1

-driver bar 20. The rear end of the lever 65 has a hole 70 therein through which a rod 71 projects. The upper end of this rod is screw-threaded to engage nuts 72 and the lower end of said rod is provided with a head 73 and washer 74 against which washer the lower end of a spring 75 bears. The upper end of said spring enters a recess 76 in the arm 56 and bears against the bottom of said recess. By adjusting the nuts 72, more or less pressure byv said spring can be brought to bear lupon the rod 71 and thus upon the'lever 65 to hold the stop-screw 68 against the` arm 56 when pressure is brought to bear upon the upper end of the sleeve work-support 64 for a purpose hereinafter more fully set forth. The sleeve work-support 64 has an ear 77 projecting downwardly from its lower edge into a corresponding notch 78 in the lever 65, thus preventing the sleeve 64 from rotating relatively to said lever.

The rivets used in this embodiment 'of my invention are tubularl rivets and the operation of riveting is illustrated in three steps in Figs. 4, 5 and 6. As hereinbefore set forth, the rivets descend the'raceway 34 and enter a chamber or pocket 79 between the carrier blocks 36 and 37. The Work, consisting of a plurality of plates of sheet metal 80 and 81 which are to be rivetedl together, is placed upon the movable work-support 64 in the positionillu'strated in Fig. 4, with the under surface of the plate 81 resting against the upper edge of the movablev worksupport 64.l In this position of the parts,

which is the normal position of the worksupport 64, it will be seen' that the workengaging surface or upper edge' of said movable work-support lies in a plane between vthe driver 20 and the work engaging surtoggle links 23 and 24 and the actuating link 25, crank-pin 29, cam 30 and shaft 16, I

and as said carrier and driver descend the rivet is placed upon the upper end of the guide-pin 63 and is guided by said guide-pin. through the holes 83 and 84 provided in the plates 80 and 81 and afterthe rivet is thus positioned the driver 20 continues to descend, pushing the rivet out from between the carrier blocks 36 and 37v and pushing Lthe guide-,pin 63 downwardly against the action of the spring 60 until the parts assume the relative positions illustrated in against theupper surface of the plate 80,

while the end of the rivet which is to be clenched projects through the plate 81 a suilicient ldistance to be formed into a curled over clench by the final'step in the riveting operation, the plates 80 and 81 being clamped together. Up to this point the vmovable yieldingly supported work-support 64 remains stationary and is held in a stationary position by the strength of the spring 75 which holds the rod 71'downwardly and holds the lever 65 in astationary position until the plates 80 and 81 are clamped together by the driver 20, pushlng the rivet head against the plate 80 and thus clamping the plates 80 and 81 together, as hereinbefore set forth. v

The operation of turning over the projecting end of the rivet is now performed by .a further descent of the driver 2O.V It 1s evldent that upon a further descent/of said driver 20 the plates 80 and 81, being firmly clamped together, cannot yield and the movable workesupport 64`is obliged to move downwardly, being allowed so to do by reason of the compression of the spring 75 through the intermediate elements, viz, the rod 71 and lever 65.

The spring 75 is constructed of such strength and the tension applied thereto is such that said spring will take the thrust of the driver through the riveted plates until such time as said plates are firmly clamped together and the under side of the head of the rivet is 'firmly clamped against the upper surface of the plate 8 0. Now, as the driver descends, as hereinbefore set forth, still further the projecting lower end of the rivet 82 encounters the curved depression 57 of the upper end of the work-support 54, which constitutes an anvil and acts to curl over or clench that portion of the rivet which projects below the plate 81 and saidV clenched portion of the rivet is forced rmly against the under face of said plate 81, thus firmly clamping and riveting the plates 80 and 81 together without any tendency to cramp the rivet 82 or to make it buckle prior to the clenching operation.

In the latter part of the riveting operation it will be seen that the upper edge of the stationary work-support 54, outside the depression 57 constituting the anvil, forms a stationary work-support for the plates 80 and 81 and from the foregoing description it will be seen that when the parts are in their normal positions the upper edge of the yieldingly supported work-support 64 is in advance of the work-engaging face of the stationary work-support 54 and so remains until the clenching operation begins.

As soon as the plates have been riveted together, as hereinbefore described, the driver 20 moves upwardly releasing the pressure upon the rivet 82 and the plates 80 and 8l. 'Ihe movable work-support then moves upwardly and the plates are removed from the guide-pin 63. The plates are then moved along by the operator and the guidepin caused to enter lanother hole in readiness for the reception of another rivet and the operation of the different parts hereinbefore described is repeated to feed, position and clench another rivet.

While in the foregoing description and in the drawings, an embodiment of my invention is described and illustrated particularly adapted forhandling and setting tubular rivets, I do not wish to be understood as limiting my invention to the use of tubular rivets, as with very lslight modifications within the knowledge, of one skilled in the art other forms of rivets can be used, fed and clenched Without departing from the spirit of my invention.

Having thus described my invention, what I claim and desire by Letters Patent to secure is:

1. A riveting machine having, in combi.

nation, a driver, an anvil, a work-support, a lever upon which said work-support is mounted, a spring connected to said lever and adjustable means adapted to regulate Y the position of said lever and of said worktion, a movable work-support, yieldingv means upon which said movable work-support is mounted, a stationaryA work-support adjacent to said movable work-support, an anvil adjacent to said work-supports and a driver movable toward and away from said work-supports, the worloengaging face of said movable work-support normally lying in a plane between said driver and the workengaging face of said stationary work-support and adjustable means constructed and arranged to regulate the position of said movable work-support relatively to said anvil and driver.

4. A riveting machine having, in combination, a driver, a stationary anvil, a sleeve surrounding said anvil and constituting a work-support, a lever upon which said sleeve is detachably mounted and a spring connected to said lever.

5. A machine for setting tubular rivets in a piece of sheet material having, in combination, a driver, a movable work-support,

yielding means upon which said movable work-support is mounted, a stationary worksupport having a recessed portion constitut-v ing an anvil and a guide pin slidably mounted in said stationary Work-support in alinement with said driver and surrounded by said recessed portion.

6. 'A machine for setting tubular rivets in a piece of sheet material having, in combina-- tion, a driver, a movable sleeve constituting a work-support, yielding means upon which said work-support is mounted, a stationary sleeve constituting a work-support, said stationary sleeve having a recess in one end thereof constituting an anvil and a guide pin slidable in said stationary sleeve in alinement with said Adriver and surrounded by said recessed portion.

7. Ariveting machine having, in combination, a movable work-support, Va yieldingly mounted lever upon which said movable work-support is mounted, a stationary worksupport adjacent .to said movable work-support, an anvil adjacent to said work-.sup-

ports, a driver movable toward and away rom said work-supports, the work-engaging face of said movable work support normally lying in a plane between said driver and thework-engaging face of said station-` ary work support, and means constructed and arranged to adjust said lever, whereby the position of said movable work supportV relatively to said anvil and driver may be regulated.

8. A riveting machine having, in combination, a movable work-support, yielding means upon which said movable work-support is mounted, a stationary work-support.

Witnesses.

l ALBERT T. MAENCHE Witnesses:

CHARLES S. GooDrNG, y SYDNEY E. Tar'r. 

